package day10;

public class Demo5 {
    public static void main(String[] args) {
        Integer a=127;
        Integer b=127;
        System.out.println(a==b); //true
        System.out.println(127==127);

        Integer a2=128;
        Integer b2=128;
        System.out.println(a2==b2);//flase
        System.out.println(new Integer(128)==new Integer(128));

        int a3=100;
        String s=a3+" 2";
        System.out.println(s);
    }
}
